Indicating fuse-holder.



B.D. HORTON.

INDIGATING FUSE HOLDER. A1 PLIOATION FILED JAN.7.1914.

Patented May19,1'914.

BRYSON 1). HORTON, or DETROIT, MICHIGAN.

INDICATING FUSE-HOLDER.

Specification of Letters Patent.

Patented May 19, 1914 Appiication filed January 7, 131 4. Serial N 0.810,722;

To all whom it may concern:

Be it known that I, BRYson D. HORTON, a citizen of the United States, reding at Detroit, in the county of Wayne and State of Michigan, haveinvented certain. new and useful Improvements in Indicating Fuse-Holders, of which the following, taken in connection with theaccompanying sheet of drawings, is a full, clear, and concise de'-scription.

My present invent-ion'relates particularly to certain details ofimprovement in indi cating fuse-holders of the general type illustratedin my previous Patent No. 901,448, dated October 20th, 1908, in which isdisclosed ,an indicating element secured uponth exterior of the holder,which indicates at all times the condition of the within contained fuse.

Among the objects-of my present invention are to provide a new and novelmeans of securing-the fuse terminals to the holder, a new and novelmeans of securing the indicator element to the holder, and a new andnovel means of connecting the indicator ele ment to the fuse, all ofwhich will be fully understood upon a reading of the followingspecification.

In the accompanying drawings: Figure lis a perspective View of afuse-holder incorporating the features of my invention.

Fig, 2 is a transverse sectional view of the fuse-holder disclosing theinterior fuse'terminals and means of connecting the indicator elementwith the fuse. Fig. 3 is a similar View showing the relative position ofthe indicator parts and the condition of the fuse when blown. F ig. 4 isa cross-sectional' view taken on line'A-A of Fig. 2, and Fig. 5 is aperspective View of the insu lating tie wire connecting button,

In detail 1 indicates the casing of the fuse-holder, which is preferablymade of fiber or other insulating material, 2 the metal end capstherefor, 3 the fuse terminals, and at the fuse strip, the ends of whichare secured to the inner ends of the terminals 3, preferably by beingsoldered. The terminals 3 are secured andheld in position by means ofsuitable screws 5, which also secure the end caps 2 to the holder, theheads of the screws engaging the end caps, while the screw threadedshanks thereof eX- tend through suitable perforations in both end capsand fuse-ho1der. The terminals 3 are slotted adjacent to their-innerends at 6 date the thickness of the terminal and when in position thepositioning members 7 support and hold the fuse in its proper positionwithin the holder. By this means I am enabled to assemble the respectiveterminals and positioning members before inserting them in the tube orholder and by the simple operation of inserting thescrews 5, the fuseterminals and end caps are expeditiously assembled into completecommercial form.

In order to indicate the condition of the fuse, I provide an indicatorelement in the form of a spring 9 secured at one end 10 to the interiorof the fuse holder. The opposite end 11 is sccuredto the fuse 4 by a tieWire 12 the latter being threaded through a perforation 13 in ,the fusestrip which is provided for the purpose of weakening the same at thispoint of connection, so that when the fuse is blowmthe end 11 of thespring indicator element 9 will have the east resistance towardseparating from the body of the fuse-holder. v

4 The end 11 of the spring indicator element is insulated from thefusestrip 4 by means of a lava button 14, this button being providedwitha reduced portion 15 fitting the perforation of the spring indicatorelement. This button is provided with a countersink l6 and is perforatedat two places 17 and 18. Throughthese perforations the tie wire 12extends and by means of the tie wire the button is held in its properposition. After the" wire has been inserted through perforations orholes in the button an insulating sealing compound 19 is placed withinthe countersink 1G to fill the same. By this means I accomplish thecomplete insulation of the indicator element 9 from the live parts ofthe fuse when in use. The end 10 of the indicator element 9, which issecured to the inner surface of the casing, is covered with a suitableinsulating material 20.

Having thus described my invention what I claim as new herein and desireto secure by Letters Patent is:

1. In a fuse-holder or casing, a fuse therein, a springfsecured atonecndto the intcrior'of the casing and secured at its free end exteriorof the casing by a transverse connection with the fuse within thecasing,

said connection and spring being insulated from each other by aninsulating button, the latter being retained in position by thetransverse connection,- which connection serves to hold'the' springadjacent the exterior of the casing while the fuse therein is unbroken.

2. In a fuse-holder or casing, a fuse therein, a spring actuatedindicator element se cured at one end to the interior of the casing andat its opposite end exterior of the casing to the fuse when unbroken,said latter end being provided with an insulating element in the form ofa button, said insulating element having provision for the accommodationof a tie wire whichconstitutes a connection with the fuse and means forins ulating the tie wire so the same is unexposed exteriorly of thecasing.

3. In a fuse-holder or casing, a fuse therein, an indicator springelement secured to the casing, means for securing said element to thefuse and means for insulating the securing means from the indicatorelement, said means comprising a detachable insulatin'g button whichrenders said element entirely electrically unexposed when the -fusewithin the casing is unbroken.

In witness whereof I have hereunto set my hand in the presence of twosubscribing Copies of this patent may be obtained for five cents each,by addressing the Uommissioner of Eatenta, Washington, D. C.

